Merge pull request #19 from IliaSky/remove-windows-log

Prevent logs in commandExistsWindowsSync. fix #18

Author: mathisonian

lib/command-exists.js

@@ -89,7 +89,7 @@ var commandExistsUnixSync = function(commandName, cleanedCommandName) {
 
 var commandExistsWindowsSync = function(commandName, cleanedCommandName, callback) {
   try {
-      var stdout = execSync('where ' + cleanedCommandName);
+      var stdout = execSync('where ' + cleanedCommandName, {stdio: []});
       return !!stdout;
   } catch (error) {
       return false;